Liquid sprayer



June-30, 1936. v R M, BAGLEY 2,045,893 I LIQUID SPRAYER Filed Jan. 4,1954 Zhwentor EaazerM 5/461. EY

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Patented June 30, 1936 A as S ATES creme. UIZ: 35121319133 r, I

Robert M. Bagley, Haddonfield, N. J assignor to RiMYHoIling'sheadCorporation, Camden, N. J., a corporation-of New Jersey ApplicationJanuary 4, 1934, Serial 705,271

is Claims. (01. 299-39 o,

My invention relates to certain novel improvements in liquid Sprayers,and it relates more particularly to manually operated liquid sprayersadapted "to be attached to and to be use'dinconjunction with originalcontainers of liquids to be sprayed. r M I One of the objects of myinvention is to provide a liquid sprayer which will produce a generallycontinuous spray notwithstanding the intermittent operation of the airpump. A further object of my present invention is to. provide a spraywhich will function efficiently, which will be inexpensive to produce,and which will be dependable in all positions and under all conditionsof operation.

With the above and other objects in View, my invention consists ofcertain novel features of construction, which will appear more fullyfrom the following detailed description and the accompanying drawing.

For the purpose of illustrating my invention, I have shown in theaccompanyingdrawing one form thereof which is at present preferred byme, since the same has been found in practice to give satisfactory andreliable results, although it is to be understood that the variousinstrumentalities of which my invention'consists can be variouslyarrangedr and organized and that the invention is not limited to theprecise arrangement and organization of the instrumentalities as hereinshown and described.

Referring to the drawing in which like refer- Figure 1 represents agenerally longitudinal sectional view of the'sprayer embodying myinvention.- Y

Figure 2 represents amodified form ofconstruction embodying myinvention. I Figure 3 shows a modified form of construction Figure 4shows a further modified form of con- The liquid sprayer of my presentinvention includes a generally cylindrical member 5 which serves as apump cylinder. i-lntothe-front end of the cylinder memberi a generallycylindrical air chamber 6 is:telescoped;--the outer diameter of thechamber fibeing; approximately the same as the inner diameterof thecylinder-"5f The chamber. 6 may be formed of a single sheet of metal bydrawing in a dye, therebygiving'it an end wall 1, and also'forming asuitable flange 8 around its open end; which=then f0rmspartof aninterlocking seam with the 'end of the cylindrical' seal 5, and with aflange of a cap member Oll nozzle member 9;

' The c'apmember or nozzle member 9 is preferably provided with anoutwardly converging more 01' less conical .wall It, terminating in aslight tip l I, having asuitable aperture l2 therethrough;

A retainer plate It extends across the cap "member 9 and is held inplace by the seam Id.

The seam it is formed in the conventional manner; by any suitablecapping machine, as for instance, those used in can-making. TheliquidcQ'nducting tube It is extended through a suitable opening l 6 inthe retainer plate it, with the end of the tube projecting into therecessed tip I ljof the cap 9. The tube l5-is soldered in place tothe'plate l3, bysolder l1 and I8.

"A screw-cap i9 is fastened to one side of the fcylind'er 5, near thefront end thereof, as for instance, by soldering at 29, and an aperture2| ,is' providedthrough the'wall of the chamber 6, through the wall ofthe cylinder 5, and through the top 22 of the screw-cap '59, so thatfree com- The tube 55 extends through the opening 2| "down into theliquid container 23, and may be 'bent slightly so as to extend towardsthe side wall of the'ca'n'near the bottom thereof.

The can 23 may be any standard or conventional screw-top can serving asan original container for the liquidto be sprayed.

A check valve housing 24 is provided in the terminal wall 7 of the airchamber 6, as indicated particularly in Figures 1 and 2; this checkvalve housing including an annular valve seat 25;- and'a Valve cage 26within which a ball check valve 27 is loosely mounted. The inner end ofthe' c'ageZS is provided with perforations 28,

through whichair may enter into the chamber 6. The piston 29, carried onthe inner end of the piston 'rod 3fl may be any suitable piston, as forinstance, composed of the metallic follower plate 3t of a cup-shapedleather or similar washer 32,

and the, resilient sheet metal (phosphor-bronze or brass) retainer andexpander member 33, having'the serrated flange 34 adapted to bearoutwardlyagai nst the flange of the cup-shaped washer-32, thereby topress it into contact with the inner surface of the cylinder 5. Thepiston rod 36 extends through an opening 35 of any'suitable cylinderhead 36, which may be formed of wood or similar material, and held inplace by one or more set screws 31. The piston rod 30 is pro- 5 videdwith a handle 38, and a' stop washer 39, held in place by the swedgedprojections 40 formed of the rod 30. A helical compression spring 4| mayalso be provided on the rod 30 to take up theshock of any suddenwithdrawal of the piston rod;

10 that is, to prevent the piston 29 abutting against the cylinder head36. The opening 35 in the cylinder head may be sufficiently larger thanthe piston rod 38, to permit the intake of 'air, although if desired, anopening 42 may be provided 15 in the cylinder wall, ahead of the pistonin.its..retracted position through which the air may also be taken in.

In the embodiment of the invention shown in Figures 1, 3 and 4, anopening 43 is also provided.

20 in the plate l3, for maintaining permanent air communication betweenthe interior of the conical portion l8 of the cap member 9, and. theint'erior of the chamber 6.

The discharge end of the tube I5 is provided 25 with an opening (inaddition to its, end opening) which is in communication with theinterior of the air chamber 5. In the embodiment of the invention shownin Figure 1 and Figure 2, this opening is in the form of a slot 44 cutinto the $9 tube from its end, and of'a length greater than the depth ofthe recess of the tip I I. In the embodiment of the invention shown inFigure 3,

this opening is in the form of afsmallround side opening 45, which maybe drilled into the side wall of the tube at one point, while in. theembodiment of the invention shown in Figure 4, this opening is formed bygrinding or filing the end of the tube to form two flats 46, convergingtowards the end, and extending sufiiciently far back 40 fromthe end ofthe tube, as to exposethe interior of the tube on the two sides beyondthe depth of the recess of the tip II.

This opening (44, 45, or 46) establishes communication between theinterior of the air cham- 45 her 6, and the discharge opening l2 of thesprayer. Thus, the air pumped into the chamber 6- (and also into-thevacant portion of the container 23') exerts a pressure on the surface ofthe liquid witha in the container 23, 'and also dischargesa jet ot 50air through the opening I2. The air discharging through, the opening I2meets the liquid forced up through the tube l5 by the static pres sureof the air, and the liquidis entrained in. the air stream and is carriedoutin the form of a 55 fine spray.

This spray tends to be more or lesscontinuous, notwithstanding thereciprocating motlonsof the piston. Thus, the; check valvelflgentrapsthe air within the chamber 6, (and within any vacant portion of thecontainer 23) and the air may be stored at sufficient pressure to givecontinuity-to the p ay.

The sealing gasket or washer 4] of any suitable sealing material (cork,rubber, fiber, or the like) seals the cylinder 5 intogthe container28,,thereby establishing acompletely. enclosed air chamber, 1

Intheformsof construction shown in Figures 1,;3and4, the tube I5ispermanently fixedand 7 immovabl with respect to the cylinder 5, ,whilein,;the1 embodiment of the invention shown, in.

Figure 2, the tube 48 is preferably formed with a resilient loop 49 (thetube being of brass, bronze,

or other more or less resilient material), and is also provided with alocking notch or double bend 5B, which is adapted to engage the edge ofthe 5 opening 2| so as detachably to retain the tube 48 in position.Thus, the tube is supported between the recess of the tip H and the edgeof the. opening. 2i. When it "is desiredv to remove the tube 48, thelower end of the tube is bent 10 until the notch 50 is loosened, and theend of the tube may then be removed from the recess of the tip H andcompletely removed from the'air chamber;.

The. invention may be embodied in other specificforms withoutv departingfrom the spirit or essential, attributes thereof, and I therefore desirethe present embodiments to be considered in all respects as illustrativeand not restrictive, reference being had to the appended claims ratherthanltothe foregoing description toindicate the scope of the invention.

"'Having thus described. my invention, what I hereby-claim: as new anddesireto secure by LettersPatent, is:

1 Aliquid sprayer including a liquid reservoir, an air, chamberincommunication with said liquid lie ryoir, a uick-detachabIe and sealedconnectiolfr between said air chamber and said liquid reservoir, a.generally conical nozzle forming a front term'malof said air v chamberand having a spray-discharge. opening therein, a liquid-conducting tubeextending from said spray-discharge opening in the air chamber, into theliquid reser- .v.oir. inproximity to the bottom thereof, anopening'inthaside ofsaid tube near the discharge end thereof, a; pumpcylinder surrounding said air chamber and extending beyond the same, apump piston operatively disposed within said pump cylindenandacheckvalve intermediate the pump 0 cylinder: andisaid airchamber; said airchamber, said; nozzle and said. cylinder being secured to each other bya common, annular, interfolded and interlocking seam.

2. A liquidsprayer including apump-cylinder, an air chamber disposed.within the front end of said cylinder, acheck valve intermediate saidair chamber and said pump-cylinder, and opening in thedirection of theair chamber, a spray-discharge opening in the front end of said airchamher, a liquidreservoir'detachably connected with said air chamberin; communicating relation therewith when connected, and with theconnection therebetween sealed with respect to the ex--, terior,aliquid-conducting tube extending from said spray-dischargeopening intothe liquid reservoir; and' a pump-pistonioperativelydisposed within saidpumpcylinder; said pump-cylinder and said' air-ch'ainbe'rbeing securedto each other by means of an outer, terminal, annular inter- 6O foldedand: interlocking seam.

3. A, liquid sprayer including a pump cylinder, an airchamber telescopedinto the front-end of said pump-cylinder and having an. outer end. wall;a spray-discharge opening in said outer end wall, a checkyalveintermediate the inner wallv of" saidair chamber and. saidpump-cylinder, opening in the direction of theairchamber, a liquid.reservoir, a, quick-detachable; coupling in- ,termediatesaid air chamberand said liquid reservoir Ion forming mechanical. connectionbetweenthetwo and. for establishinga. sealed airpassagewaybetween tetwda liqui -conduc ime xtending-Item l nraywd s a e; 1 ing through saidair-passageway into said liquid reservoir, and a pump-piston operativelydisposed within said pump-cylinder; said pump-cylinder and said airchamber being secured to each other by means of an outer, terminal,annular interfolded and interlocking seam.

4. A liquid sprayer including a liquid reservoir, an air chamber incommunication with said liquid reservoir, a quick-detachable and sealedconnection between said air chamber and said liquid reservoir, aspray-discharge opening in said air chamber, a liquid-conducting tubeextending from said spray-discharge opening in the air chamber, into theliquid reservoir, in proximity to the bottom thereof, a pump-cylinderoperatively connected with said air chamber, a pumppiston operativelydisposed within said pump cylinder, and a check valve intermediate thepump-cylinder and said air chamber; said air chamber and saidpump-cylinder being secured to each other by an annular, interfolded andinterlocking seam at the front end of each.

5. A liquid sprayer including a pump-cylinder, an air chamber connectedwith said pump-cylinder through an annular seam formed of interlockingfolded peripheral flanges on the two connected members respectively, aliquid reservoir, a quick-detachable coupling member intermediatesaidair chamber and said liquid reservoir and having an air passagewaytherethrough connecting said air chamber and said liquid reservoir, aspray-discharge opening in the front end of said air chamber, aliquid-conducting tube extending from said spray-discharge opening inthe air chamber through said air-passageway into said liquid reservoir;said spray-discharge opening being in direct communication with said airchamber, a pump-piston operatively disposed within said pump-cylinder,and a check valve intermediate said pump-cylinder and said airchamber,opening towards the latter.

6. A liquid sprayer including a pump-cylinder an air chambercommunicable therewith; said air chamber having a front terminal wallincluding a spray-discharge opening therethrough, a tube retainer memberwithin said air chamber, a check valve intermediate said air chamber andsaid pump-cylinder, opening in the direction of the former, a liquidreservoir in communicating relationship with said air chamber,

' a quick-detachable coupling intermediate said air chamber and saidliquid reservoir, a liquidconducting tube" extending from saidspray-discharge opening through said retainer member, through saidquick-detachable coupler into said liquid reservoir, and being fixedlysecured to said retainer member, and a pump-piston operatively disposedwithin said pump-cylinder; said spraydischarge opening being at alltimes in direct communication with said air chamber; said pump-cylinderand said air chamber being secured to each other in sealed relation toeach other, by means of an interfolded and interlocking annular seamsurrounding their front ends.

7. A liquid sprayer including a cylinder, one portion of which is a pumpchamber, a cylindrical member having an apertured end wall thereon andembraced by the forward end of said cylinder, said end wall forming therear end of an air chamber and the front wall of said pump chamber andhaving a check valve thereon for preventing flow of air through itsaperture from the air chamber back to the pump chamber, an apertured capmember fixed to the forward ends of said cylinder and said cylindricalmember to act as the forward wall of said air chamber, a fastening capsecured to the exterior of said cylinder, said fastening cap, cylinderand cylindrical member having registering apertures therethrough withinthe area of the cylinder contacted by said fastening cap, a receptaclefor liquid to be sprayed detachably secured to said fastening cap, atube for conducting liquid to be sprayed from said receptacle to theaperture in said cap member and means for sealing the joint between saidcylinder and said cylindrical member at the edges of said registeringapertures therethrough.

8. A liquid sprayer as set forth in claim '7, and in which the cylinder,the cylindrical air member and the cap member are secured to each otherin sealed relation to each other by means of an interfolded andinterlocking annular seam surrounding their front ends.

ROBERT M. BAGLEY.

